The piece described is a Montblanc Meisterstück Classique 144, about 20 to 30 years old and, by photo, not a fake. As ink, Montblanc or Pelikan cartridges or inks are suitable; before putting it into operation, a thorough cleaning is necessary; the old piston converter should be replaced, with Pelikan or Waterman converters fitting; the newer Montblanc converters, on the other hand, do not. An initial cleaning can take place in an ultrasonic bath; if that is not enough, Montblanc service in Hamburg takes over a complete refurbishment including feed, front part and inner mechanism against a service flat rate of around 50 euros. On the laser engraving on the clip, it should be noted that this has only been used since the 1990s; an older piston filler with a laser-engraved clip therefore mostly indicates that the cap has been exchanged once in service.